美國(guó)aquatrol蒸汽空氣安全閥
Usages:
• Series 560 – Use for ASME Section I applications to pressure ratings of 250 PSI. V and NB stamped for fired vessels. Boilers, or most areas where steam safety valves are required.
• Series 570 – Use for ASME Section VIII applications to pressure ratings of 250 PSI. UV and NB stamped for unfired vessel protection. Used for many applications to protect or relieve pressure for Air, Gas and Steam.
Features:
• Designed for durability
• 6 orifices – 12 sizes of piping options
• Top guided seating and discharge
• Full nozzle; high capacity levels
• Excellent re-seating characteristics with pivoting
ball-post design
• Short, tuned blow-down and can be adjusted
with double ring to meet specific requirements
• Heavy duty hood and lever mechanism
• Standard 17-7 stainless steel springs
Options:
• Stainless steel whetted trimming package
(seat, disk and interiors)
• O-ring seating. (Teflon, EDPM, Viton, or as specified)
• Bubble tight seating options
• Anti vibrating spring for lift lever
• Packed lift lever
• BPT pipe threading
Ordering:
• Specify series (560/570), special seating options, piping size,
set pressure PSI , capacity requirements when ordering
• See opposite page for details
